Composição e estrutura das infracomunidades endoparasitárias de Gymnotus spp. (Pisces: Gymnotidae) do rio Baía, Mato Grosso do Sul, Brasil - DOI: 10.4025/actascibiolsci.v26i4.1527

  title={Composiç{\~a}o e estrutura das infracomunidades endoparasit{\'a}rias de Gymnotus spp. (Pisces: Gymnotidae) do rio Ba{\'i}a, Mato Grosso do Sul, Brasil - DOI: 10.4025/actascibiolsci.v26i4.1527},
  author={Andr{\'e}ia Isaac and Gislaine Marcolino Guidelli and Jakeline Galv{\~a}o de França and Gilberto Cezar Pavanelli},
  journal={Acta Scientiarum. Biological Sciences},
Parasites of 111 specimens of the Gymnotus genus were analyzed. The fishes were captured in bolters and gill nets. Sixteen parasite species were recorded, being 93.7% of the species found in larval stages. Significant positive association and correlation between abundances of twenty pairs of species occurred. All the analyzed parasite species had a clumped pattern in host sample. No dominance was reported among the parasite species. Diversity of the infracommunities of male and female hosts… 

First report of larval Spiroxys sp. (Nematoda, Gnathostomatidae) in three species of carnivorous fish from Três Marias Reservoir, São Francisco River, Brazil

Evaluating the parasitism by nematode larvae at three species of carnivorous fish in the Tres Marias Reservoir, Brazil provides evidence that these carnivorousFish serve as paratenic hosts of Spiroxys sp.

Digenea, Nematoda, Cestoda, and Acanthocephala, parasites in Potamotrygonidae (Chondrichthyes) from the upper Paraná River floodplain, states of Paraná and Mato Grosso do Sul, Brazil.

The present paper represents the first study on the endoparasitic fauna of Potamotrygon falkneri and P. motoro in the upper Parana River floodplain and listed ten new records of parasites in the host P. falknersi and five new records in the locality upper Paranas River.

Parasitic endohelminths of Metynnis hypsauchen (Characidae) from Jari River basin, Brazilian Amazon.

This first study on parasites of M. hypsauchen showed that this fish is an intermediate or definitive host for some species of these parasites, and all parasites showed an aggregate dispersion.

Composition and structure of the parasitic fauna of Hypostomus spp. (Loricariidae: Hypostominae) from a Neotropical river in Brazil

Analysis of the distribution of the parasitic infracommunity of six species of Hypostomus from the Ivaí River and permutational multivariate analysis of variance (PERMANOVA) showed different parasite species compositions among the hosts.

Endoparasites of Gymnotus sp. (Gymnotiformes: Gymnotidae) from commercial baitfish farming in Pantanal basin, central Brazil

This study evaluated the endohelminthic parasites of native baitfish Gymnotus spp. collected from different baitfish farming in the Pantanal basin, State of Mato Grosso do Sul, Central Brazil. From

Sazonalidade da fauna de metazoários de Pygocentrus nattereri (Kner, 1858) no lago Piranha (Amazonas, Brasil) e a avaliação de seu potencial como indicadora da saúde do ambiente

There were significant variances in the parasitic index according to the different periods of hydrologic cycle and P. nattereri has achieved the conditions described in the literature to be select a fish-host and his parasite fauna as biomonitor.

Condition factor of Astyanax intermedius Eigenmann, 1908 (OSTEICHTHYES, CHARACIDAE) parasitised by Paracymothoa astyanaxi Lemos de Castro, 1955 (CRUSTACEA, CYMOTHOIDAE) in the Grande River, Serra do Mar State Park - Santa Virgínia Unit, São Paulo, Brazil.

In conclusion, parasitism by P. astyanaxi has deleterious effects on this host population which may cause changes in the reproductive and food dynamics of parasitised specimens due to low body conditions.

Seasonality of nematode larvae in Iguanodectes spilurus (Characidae) an ornamental fish from northeastern Para, Brazil

A parasitological survey of larval nematodes from freshwater ornamental fish Iguanodectes spilurus caught in the watercourse of the Caete River, in the northeast region of the State of Para, Brazil shows high infection throughout the year, probably due to increased availability of intermediate hosts or food.

First record of larvae of Hysterothylacium (Nematoda: Anisakidae) with zoonotic potential in the pirarucu Arapaima gigas (Osteichthyes: Arapaimidae) from South America.

Third-stage larvae (L3) of Hysterothylacium sp. were collected by the first time in juveniles of pirarucu Arapaima gigas farmed in the Rio Preto da Eva, Amazonas state. Ninety-eight (98) out of 100

First record of larvae of Hysterothylacium ( Nematoda : Anisakidae ) with zoonotic potential in the pirarucu Arapaima gigas ( Osteichthyes : Arapaimidae ) from South America

Third-stage larvae (L3) of Hysterothylacium sp. were collected by the first time in juveniles of pirarucu Arapaima gigas farmed in the Rio Preto da Eva, Amazonas state. Ninety-eight (98) out of 100



Endoparasite infracommunities of Hemisorubim platyrhynchos (Valenciennes, 1840) (Pisces: Pimelodidae) of the Baía River, Upper Parana River floodplain, Brazil: specific composition and ecological aspects.

Several species of parasites were correlated with host size and sex, and may be explained by increase in food content and possible behavioral modifications of male and female hosts.

Structure and diversity of endoparasitic infracommunities and the trophic level of Pseudoplatystoma corruscans and Schizodon borelli (Osteichthyes) of the high Paraná River.

Independence of diversity values in relation to sex of P. corruscans and S. borelli evidences that the ecological relationships are similar between males and females in these species, indicating that each one presents homogeneity in alimentary behaviour during all its life time.

Ecological aspects of endohelminths parasitizing Cichla monoculus Spix, 1831 (Perciformes: Cichlidae) in the Paraná River near Porto Rico, State of Paraná, Brazil.

Prevalence and total host length were positively correlated in fish parasitized by P. macrophallus and Q. machadoi in males and females of C. monoculus.

Observations on the Morphology and Life Cycle of Neodiplostomum intermedium (Trematoda: Diplostomatidae)

1. Neodiplostomum intermedium Pearson is recorded from four new hosts; as an adult from the water rat, Hydromys chrysogaster Geoffroy, and as a metacercaria (diplostomulum), from tadpole and adult of

Structure, Development, and Behaviour of New Strigeatoid Metacercariae from Subtropical Fishes of South America

A general conclusion is drawn that the South American trematodes are more primitive than their counterparts from other continents.

Prosthenhystera obesa (Digenea), parasite of Salminus maxillosus (Characidae) of the floodplain of the upper Paraná river, Paraná Brazil: influence of the size and sex of host.

There was no influence of sex of host on prevalence and infection intensity of P. obesa, and this fact may suggest similarity in behavior with regard to feeding habit and habitat of males and females.

Changes in minnow, Pimephales promelas Rafinesque, schooling behaviour associated with infections of brainencysted larvae of the fluke, Ornithodiplostomum ptychocheilus

This study tested if metacercariae of Ornithodiplostomum ptychocheilus (Faust), encysted in the brains of fathead minnows, alter fish behaviour in a way which could represent an adaptive strategy of the fluke.

Systematic analysis of the Diplostomidae and Strigeidae (Trematoda)

  • W. Shoop
  • Biology
    The Journal of parasitology
  • 1989
The phylogeny of these groups suggested that ancestral bisegmented strigeoids originally infected reptiles, they subsequently radiated into birds with which they coevolved extensively, and on 5 separate occasions they radiate into mammals.

Hosts, distribution and pathology of infections with larvae of Eustrongylides (Dioctophymidae, Nematoda) in fishes from East African lakes.

Infected gonads, particularly ovaries were deformed and in heavy infections degenerated completely, and the biological implication of this infection with larval Eustrongylides sp.


Most of the ecological covariance of helminth diversity is displayed at rather high taxonomic levels, perhaps because of lag between host evolution and parasite adaptation.